| Last Modified: 11-29-2007 | 1.6 U | |
| Service Category: Vehicle Exterior | Section: Window/Glass | |
| Model Year: 2008 | Model: Sequoia | Doc ID: RM0000027QN00DX |
| Title: WINDOW / GLASS: POWER WINDOW CONTROL SYSTEM: TERMINALS OF ECU (2008 Sequoia) | ||
TERMINALS OF ECU
1. CHECK FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH
(a) Disconnect the M3 power window regulator motor LH connector.
(b) Measure the resistance and voltage according to the value(s) in the table below.
|
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|---|
|
M3-2 (B) - Body ground |
G - Body ground |
Battery power supply |
Always |
11 to 14 V |
|
M3-1 (GND) - Body ground |
W-B - Body ground |
Ground |
Always |
Below 1 Ω |
If the result is not as specified, there may be a malfunction on the wire harness side.
(c) Reconnect the M3 power window regulator motor LH connector.
(d) Measure the voltage according to the value(s) in the table below.
|
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|---|
|
M3-10 (UP) - M3-1 (GND) |
O - W-B |
Power window UP operation |
Ignition switch ON Power window regulator master switch OFF → UP |
11 to 14 V → Below 1 V |
|
M3-10 (UP) - M3-1 (GND) |
O - W-B |
Power window UP operation |
Ignition switch ON door glass fully open → power window AUTO UP operation → the door glass fully closed |
11 to 14 V → Below 1 V → 11 to 14 V |
|
M3-7 (DOWN) - M3-1 (GND) |
SB - W-B |
Power window DOWN operation |
Ignition switch ON Power window regulator master switch OFF → DOWN |
11 to 14 V → Below 1 V |
|
M3-7 (DOWN) - M3-1 (GND) |
SB - W-B |
Power window DOWN operation |
Ignition switch ON door glass fully closed → power window AUTO DOWN operation → the door glass fully closed |
11 to 14 V → Below 1 V → 11 to 14 V |
|
M3-9 (LIN) - M3-1 (GND) |
W - W-B |
LIN communication signal |
Ignition switch ON |
Pulse generation |
If the result is not as specified, the motor may be malfunctioning.
2. CHECK FRONT POWER WINDOW REGULATOR MOTOR RH
(a) Disconnect the L3 power window regulator motor RH connector.
(b) Measure the resistance and voltage according to the value(s) in the table below.
|
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|---|
|
L3-2 (B) - Body ground |
V - Body ground |
Battery power supply |
Always |
11 to 14 V |
|
L3-1 (GND) - Body ground |
W-B - Body ground |
Ground |
Always |
Below 1 Ω |
If the result is not as specified, there may be a malfunction on the wire harness side.
(c) Reconnect the I12 power window regulator motor LH connector.
(d) Measure the voltage according to the value(s) in the table below.
|
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|---|
|
L3-10 (UP) - L3-1 (GND) |
G - W-B |
Power window UP operation |
Ignition switch ON power window regulator switch OFF → UP |
11 to 14 V → Below 1 V |
|
L3-10 (UP) - L3-1 (GND) |
G - W-B |
Power window UP operation |
Ignition switch ON door glass fully open → power window AUTO UP operation → the door glass fully closed |
11 to 14 V → Below 1 V → 11 to 14 V |
|
L3-7 (DOWN) - L3-1 (GND) |
P - W-B |
Power window DOWN operation |
Ignition switch ON power window regulator switch OFF → DOWN |
11 to 14 V → Below 1 V |
|
L3-7 (DOWN) - L3-1 (GND) |
P - W-B |
Power window DOWN operation |
Ignition switch ON door glass fully closed → power window AUTO DOWN operation → the door glass fully closed |
11 to 14 V → Below 1 V → 11 to 14 V |
|
L3-9 (LIN) - L3-1 (GND) |
L - W-B |
LIN communication signal |
Ignition switch ON |
Pulse generation |
|
L3-4 (AUTO) - L3-1 (GND) |
B - W-B |
Power window AUTO UP/DOWN operation |
Ignition switch ON power window regulator switch OFF → AUTO UP/DOWN operation |
11 to 14 V → Below 1 V |
If the result is not as specified, the motor may be malfunctioning.
3. CHECK POWER WINDOW REGULATOR MASTER SWITCH
(a) Disconnect the M2 power window regulator master switch connector.
(b) Measure the resistance and voltage according to the value(s) in the table below.
|
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|---|
|
M2-3 (B) - Body ground |
L - Body ground |
Battery power supply |
Ignition switch ON |
11 to 14 V |
|
M2-13 (B) - Body ground |
P - Body ground |
Battery power supply |
Always |
11 to 14 V |
|
M2-1 (E) - Body ground |
W-B - Body ground |
Ground |
Always |
Below 1 Ω |
If the result is not as specified, there may be a malfunction on the wire harness side.
(c) Reconnect the M2 power window regulator master switch connector.
(d) Measure the voltage according to the value(s) in the table below.
|
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|---|
|
M2-4 (UP) - M2-1 (E) |
O - W-B |
Driver side door power window UP operation |
Ignition switch ON, driver side door power window regulator switch OFF → UP |
Below 1 V → 11 to 14 V |
|
M2-4 (UP) - M2-1 (E) |
O - W-B |
Driver side door power window AUTO UP operation |
Ignition switch ON, driver side door glass fully closed → power window AUTO UP operation → driver side door glass fully open |
Below 1 V → 11 to 14 V → Below 1 V |
|
M2-5 (DOWN) - M2-1 (E) |
SB - W-B |
Driver side door power window DOWN operation |
Ignition switch ON, driver side door power window regulator switch OFF → DOWN |
Below 1 V → 11 to 14 V |
|
M2-5 (DOWN) - M2-1 (E) |
SB - W-B |
Driver side door power window AUTO DOWN operation |
Ignition switch ON, driver side door glass fully closed → power window AUTO DOWN operation → driver side door glass fully open |
Below 1 V → 11 to 14 V → Below 1 V |
|
M2-12 (U) - M2-1 (E) |
V - W-B |
Rear LH side door power window UP operation |
Ignition switch ON, rear LH side door power window regulator switch OFF → UP |
Below 1 V → 11 to 14 V |
|
M2-15 (D) - M2-1 (E) |
B - W-B |
Rear LH side door power window DOWN operation |
Ignition switch ON, rear LH side door power window regulator switch OFF → DOWN |
Below 1 V → 11 to 14 V |
|
M2-10 (U) - M2-1 (E) |
O - W-B |
Rear RH side door power window UP operation |
Ignition switch ON, rear RH side door power window regulator switch OFF → UP |
Below 1 V → 11 to 14 V |
|
M2-16 (D) - M2-1 (E) |
LG - W-B |
Rear RH side door power window DOWN operation |
Ignition switch ON, rear RH side door power window regulator switch OFF → DOWN |
Below 1 V → 11 to 14 V |
|
M2-6 (LIN1) - M2-1 (E) |
L - W-B |
LIN communication signal |
Ignition switch ON |
Pulse generation |
|
M2-7 (LIN2) - M2-1 (E) |
W - W-B |
LIN communication signal |
Ignition switch ON |
Pulse generation |
If the result is not as specified, the power window regulator master switch may be malfunctioning.
4. CHECK MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH)
(a) Disconnect the DD, H3 and H4 main body ECU connectors.
(b) Measure the resistance according to the value(s) in the table below.
|
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|---|
|
DD-62 (GND1, GND2) - Body ground |
W-B - Body ground |
Body ground |
Always |
Below 1 Ω |
|
H3-21 (PCTY) - Body ground |
O - Body ground |
Front door courtesy light switch RH signal |
Front door RH open → closed |
Below 1 Ω → 10 kΩ or higher |
|
H4-24 (DCTY) - Body ground |
BR - Body ground |
Front door courtesy light switch LH signal |
Front door LH open → closed |
Below 1 Ω → 10 kΩ or higher |
If the result is not as specified, there may be a malfunction on the wire harness side.
(c) Reconnect the DD, H3 and H4 main body ECU connectors.
(d) Measure the voltage according to the value(s) in the table below.
|
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|---|
|
DB-13 (BECU) - Body ground |
GR - Body ground |
BECU power supply |
Always |
11 to 14 V |
|
DD-43 - Body ground |
LG - Body ground |
IG signal |
Ignition switch off → ON |
Below 1 V → 11 to 14 V |
|
H2-10 (LIN2) - DD-62 (GND1, GND2) |
V - W-B |
LIN communication signal |
Ignition switch ON |
Pulse generation |
If the result is not as specified, there may be a malfunction on the wire harness side.
5. CHECK BACK DOOR ECU (MULTIPLEX BODY ECU)
(a) Disconnect the V2 an V3 back door ECU connectors.
(b) Measure the resistance and voltage according to the value(s) in the table below.
|
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|---|
|
V2-7 (BECU) - Body ground |
GR - Body ground |
Battery power supply |
Always |
11 to 14 V |
|
V2-8 (SIG) - Body ground |
Y - Body ground |
IG power supply |
Ignition switch off |
Below 1 V |
|
Ignition switch ON |
11 to 14 V |
|||
|
V2-6 (GND) - Body ground |
W-B - Body ground |
Ground |
Always |
Below 1 Ω |
|
V3-7 (BKUL) - V3-19 (KEYE) |
LG - O |
Back door key cylinder linked switch signal |
Back door key cylinder turned UNLOCK |
Below 1 Ω |
|
V3-8 (BKL) - V3-19 (KEYE) |
G - O |
Back door key cylinder linked switch signal |
Back door key cylinder turned LOCK |
Below 1 Ω |
|
V3-17 (P) - V3-25 (SGND) |
V - G |
Rear wiper retractable position switch signal |
Rear wiper motor retractable position |
Below 1 Ω |
If the result is not as specified, there may be a malfunction on the wire harness side.
(c) Reconnect the V2 an V3 back door ECU connectors.
(d) Measure the resistance and voltage according to the value(s) in the table below.
|
Terminal No. (Symbol) |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|---|
|
V2-16 (MPX1) - V2-6 (GND) |
Y - W-B |
LIN communication signal |
Ignition switch ON |
Pulse generation |
|
V2-21 (A UP) - V2-6 (GND) |
G - W-B |
Back door power window AUTO UP signal |
Ignition switch ON Back door power window switch OFF → AUTO UP |
Below 1 V → 11 to 14 V |
|
V2-22 (BUP) - V2-6 (GND) |
O - W-B |
Back door power window UP signal |
Ignition switch ON Back door power window switch OFF → UP |
Below 1 V → 11 to 14 V |
|
V2-23 (BDN) - V2-6 (GND) |
V - W-B |
Back door power window DOWN signal |
Ignition switch ON Back door power window switch OFF → DOWN |
Below 1 V → 11 to 14 V |
|
V2-24 (A DN) - V2-6 (GND) |
L - W-B |
Back door power window AUTO DOWN signal |
Ignition switch ON Back door power window switch OFF → AUTO DOWN |
Below 1 V → 11 to 14 V |
|
V3-5 (BDUP) - V2-6 (GND) |
O - W-B |
Back door power window UP operation signal |
Ignition switch ON Back door power window switch OFF → UP |
Below 1 V → 11 to 14 V |
|
V3-6 (BDDN) - V2-6 (GND) |
P - W-B |
Back door power window DOWN operation signal |
Ignition switch ON Back door power window switch OFF → DOWN |
Below 1 V → 11 to 14 V |
|
V3-12 (DSV) - V3-23 (DSG) |
LG - SB |
Power supply for Hall-IC |
Ignition switch ON |
11 to 14 V |
|
V3-13 (DS1) - V3-23 (DSG) |
L - SB |
Back door window glass position signal |
Back door power window operation |
Pulse generation |
|
V3-14 (DS2) - V3-23 (DSG) |
Y - SB |
Back door window glass position signal |
Back door power window operation |
Pulse generation |
|
V3-19 (KEYE) - V2-6 (GND) |
O - W-B |
Ground for back door key cylinder switch |
Always |
Below 1 Ω |
|
V3-23 (DSG) - V2-6 (GND) |
SB - W-B |
Ground for Hall-IC |
Always |
Below 1 Ω |
|
V3-25 (SGND) - V2-6 (GND) |
G - W-B |
Ground for rear wiper reverse position and rear wiper retractable position switch |
Always |
Below 1 Ω |
If the result is not as specified, the back door ECU may be malfunctioning.
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